Determination of amount of land subsidence based on INSAR and LiDAR monitoring for a dike strengthening project

Autor: Rob R. van Buuren, Jacco K. Haasnoot, Cor Bisschop, Marco Weijland, Michel de Koning
Rok vydání: 2020
Předmět:
Zdroj: Proceedings of the International Association of Hydrological Sciences, Vol 382, Pp 57-62 (2020)
ISSN: 2199-899X
DOI: 10.5194/piahs-382-57-2020
Popis: For the dike strengthening project Krachtige IJsseldijken Krimpenerwaard (KIJK) a study has been undertaken to optimize the amount of land subsidence. Based on archive information originally a subsidence rate of 11 mm yr−1 is used in the design calculations. This means that for a 50-year period an additional 0.55 m must be considered which does not comply with the macro-stability problems of the dike. Based on INSAR and LiDAR measurement data and reanalysing the archive data, the rate of subsidence is determined at an average of 8 mm yr−1. This could mean a reduction of 27 % on the amount of soil needed to balance subsidence.
Databáze: OpenAIRE